Decode Base64 to Hexadecimal string with javascript

Needing to convert a Base64 string to Hexadecimal with javascript.

Example:

var base64Value = "oAAABTUAAg=="

Need conversion method

Output (Decoded data (hexadecimal)) A0000005350002

I know this is correct because I can use this website http://tomeko.net/online_tools/base64.php?lang=en

and punch in Base64 string of oAAABTUAAg== and get A0000005350002

What have I tried?

https://github.com/carlo/jquery-base64
https://jsfiddle.net/gabrieleromanato/qaght/

I have found a lot of questions